# coding: utf-8

import os
import sqlite3
from flask import Flask, request, session, g, redirect, url_for, abort, render_template, flash

app = Flask(__name__)
app.config.update(dict(
    DATABASE=os.path.join(app.root_path, 'flaskr.db'),
    DEBUG=True,
    SECRET_KEY='\x9fq0\x97%\xe4\x9b\x06U\x98p\xa1=\x9b\xf0\xb4\x8cwf\xcdv\x14\xf8\xdf',
    USERNAME='admin',
    PASSWORD='123456'
))
app.config.from_envvar('FLASKR_SETTINGS', silent=True)


def connect_db():
    """Connects to the specific database."""
    rv = sqlite3.connect(app.config['DATABASE'])
    rv.row_factory = sqlite3.Row
    return rv


def init_db():
    with app.app_context():
        db = connect_db()
        with app.open_resource('schema.sql', mode='r') as f:
            db.cursor().executescript(f.read())
        db.commit()


@app.route('/')
def show_entries():
    cur = g.db.execute('select title, text from entries order by id desc')
    entries = [dict(title=row(0), text=row(1)) for row in cur.fetchall()]
    return render_template('show_entries.html', entries=entries)


@app.route('/add', methods=['POST'])
def add_entry():
    if not session.get('logged_in'):
        abort(401)
    g.db.execute('insert into entries (title, text) values (?, ?)',
                 [request.form['title'], request.form['text']])
    g.db.commit()
    flash('New entry was successfully posted')
    return redirect(url_for('show_entries'))


@app.route('/add', methods=['GET', 'POST'])
def login():
    error = None
    if request.method == 'POST':
        if request.form['username'] != app.config['USERNAME']:
            error = 'invalid username!'
        elif request.form['password'] != app.config['PASSWORD']:
            error = 'invalid password'
        else:
            session['logged_in'] = True
            flash('u were logged in')
            return redirect(url_for('show_entries'))
    return render_template('login.html', error=error)


@app.route('/logout')
def logout():
    session.pop('logged_in', None)
    flash('You were logged out')
    return redirect(url_for('show_entries'))


if __name__ == '__main__':
    app.run(debug=True)
